<template>
  <div>
    <!-- 面包屑导航栏 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片试图区 -->
    <el-card>
      <div id="main" style="width:800px; height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
  // 1.导入echarts
  import * as echarts from 'echarts';
  import _ from 'lodash'
  export default {
    name: 'Report',
    data () {
      return {
        // 需要合并的数据
        options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }

      }

    },
    // 页面元素以渲染完成
    async mounted () {
      // 基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'));
      const { data: res } = await this.$http.get(`reports/type/1`)
      if (res.meta.status !== 200) {
        return this.$message.error('获取基于时间统计数据失败')
      }
      const res123 = _.merge(res.data, this.options)
      // 绘制图表
      myChart.setOption(res123);
    },
  }
</script>

<style lang="less" scoped>

</style>